package part2.thread;

import java.util.ArrayList;

public class Test {
    public static void main(String[] args) {
        ArrayList<Integer> list = new ArrayList<>();
        Thread t1 = new Thread() {
            @Override
            public void run() {
                for (int i = 0; i < 1000; i++) {
                    synchronized (list) {//同步监视器对象通常可以选取临界资源(多个线程抢的对象)
                        list.add(i);
                    }
                }
            }
        };
        Thread t2 = new Thread() {
            @Override
            public void run() {
                for (int i = 0; i < 1000; i++) {
                    synchronized (list) {
                        list.add(i);
                    }
                }
            }
        };
        t1.start();
        t2.start();

        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("list长度:" + list.size());
    }

}
